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(No Model.)

Z'Shgets-SMet 1.

J. ARMSTRONG.

PEED WA TER HEATER AND SMOKBSTAGK COMBINED.

.No. 276,150. Patented Apr.24, 1883.

WITNESSES. r

' HVVENTOR (No Model.)

2 Sheets-Sheep 2. 'J. ARMSTRONG.

FEED WATER HEATER AND SMOKE STACK COMBINED.

.150- Patented Apr.24, 1883.

11V VEN TOR Q E S S E W W UNITED STATES 1 PATENT Fries.

JAMES ARMSTRONG, 0F BRIDGEWATER, NEW YORK, ASSIGNOR TO JANE ARMSTRONG, OF SAME PLACE.

FEED-WATER HEATER AND SMOKE-STACK COMBINED.

SPECIFICATION forming part of Letters Patent No. 276,150, dated April 24, 1883.

Application filed February 3, 1883. (No model.)

To all whom it may concern Be it known that I, JAMEs ARMSTRONG, a citizen of the United States,residing at Bridgewater, in the county of Oneida and State of New York, have invented certain new and useful Improvements in a Combined Smoke-Stack and Feed-Water Heater and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in feedwater heaters for locomotive and other steam boilers, wherein the water, before entering the boiler, is heated by the passage (through .said heater) of the escaping products of combustion from the fire-box and furnaces of the boiler, or

by the exhaust-steam from the engines driven thereby, either separately or together. I

My invention relates more particularly to the provision of a feed-water heater adapted to be used in combination with the smoke-stack of a locomotive, and to the construction and arrangement of the various members of said heater, whereby great strength and resistance to steam-pressure is imparted to the heater, and easy access is afi'orded to its contained w ater chambers and tubes for the purpose of cleansing said chambers and tubes.

My invention further contemplates the provision of a heater adapted to be used in connection with stationary boilers, and to be heated by the exhaust-steam from the engines driven thereby, said heater having water chambers and tubes, so arranged as to permit the exhauststeam to pass freely through and about said water chambers and tubes, and having water-exits arranged to prevent dirt and all floating matter from passing into the boiler.

To the accomplishment of the above my invention consists in the construction and arrangement of parts substantially as hereinafter described and claimed.

Referring to the drawings, in which similar letters of reference denotes similar parts,'Figure 1 represents a side elevation of my invention in place upon and operated by the smokestack of a locomotive. Fig. 2 represents a transverse sectional view taken on the linexa; of Fig. 1. Fig. 3 is a longitudinal sectional view taken on the line y g of Fig. 2. Fig. 4 is a transverse sectional view taken on the line a z of Fig. 1. Fig. 5 represents my invention arranged to be heated by the exhaust-steam from the engines of a stationary boiler, and Fig. 6 is a longitudinal sectional view through Fig. 5.

In the drawings, A A represent the upper and lower water-chambers, respectively, said chambers being connected together by a series of large tubes, A The tubes A are fitted at their lower and upper ends in the bottom and top, respectively, of the water-chambers A A in such manner as to prevent leakage at thejoints.

B represents ajacket surrounding the tubes A and is secured by rivets b to the upper and lower water-chambers, A A, whereby a chamber is formed about said pipes,into which the escaping products of combustion or the exhaust-steam passes.

0 represents a series of sm aller pipes that pass through the large pipes A and water-chambers A A, and are secured to the top and bottom, respectively, of said water-chambers.

In Figs. 2 and 3 I have shown the pipes 0 provided at theirlower ends with flaring edges or flanges c, that bear against the beveled edges of the openings in the lower end of the waterchamber A, the upper ends of said pipes being screw-threaded and provided with nuts 0, thatbear upon the upper end of the chamber A. By this construction said pipes may be readily removed for cleansing purposes, while the ends of the water-chamber may also be removed for the same purpose. If desired, however, the pipes C may be formed with flaring edges at both upper and lower ends, as shown in Fig. 6. In either case the joints about the ends of said pipes must be made water-tight.

D D respectively represent openings or passages through the water-chambers A A, from bottom to top thereof, for the passage of heated fluids-i. 0., products of combustion or exhaust-steam.

hen my invention is used in connection with the smoke-stack of alocomotive,as shown in Figs. 1 to 4, inclusive, the products of combustion from the'fire-box pass upward through the passage D of the lower water-chamber and into the chamber surrounding the pipes A and thence through the opening or passageD in the upper water-chamber into the upper part, E, of the smoke-stack. At the same time a portion of said products of combustion pass from the lower end, E, of the smoke-stack into the lower ends of the pipes G, and thence upward through the chambers A A and their connecting-pipes A operating,in conjunction with the heated fluid about the outer sides of said tubes and chambers, toimpart heat to the water contained within the tubes and chambers, as will be readily seen.

The body F of the heater proper is provided with flanges f at its top and bottom, whereby it is secured to the sections E E of the smokestack.

When it is desired to use the heater in connection with a stationary boiler and to heat the water contained in said heater solely by exhauststeam, thepipe-sections E E are replaced by closed caps G G, Figs. 5 and 6. The lower water-chamber, A, is provided with a closed head-that is to say, is made without the central opening, D, as shown in Fig. 6. The exhaust-steam is admitted through a pipe, H, into the chamber surrounding the watertube's A, and passes thence upward through the-openin g or passage 1) into the chamber G formed by the upper closed cap, G, and fromthence it passes through the tubes 0 downward through the water chambers A A and pipes A and enters the lower steam chamber, G formed by the cap G, and thence out by the exhaust-pipe B. By this construction it will be seen that the water in the heater will readily take up the heat contained in the steam.

Having described the manner of supplying .heat to my improved heater, I will now proceed to describe the means employed to fill the heater with cold water, draw the heated water therefrom, and blow off or clear said heater from dirt and other foreign matter combined in the water or resulting from the heating thereof.

K represents the cold-water induction-pipe, said pipe leading from the forcingpump and entering the lower water-chamber, A.

K represents the hot-water eduction-pipe.

The upper end of the pipe K passes into the upper water-chamber, A, its inner end, It, being bent or turned outward and entering the top of one of the series of tubes that connect the upper and lower water chambers, A A. This tube is lettered A and said tube is closed at its lower end by a plug, 0., against the entrance of water from the lower chamber, A, for a purpose hereinafter described. The end k of the eduction-pipe K terminates a short distance below the top of the tube A, and at this point a second pipe, extends from the tube A outward through the walls of the heater and enters the eduotion-pipe K, as shown.

K represents a pipe projecting downward from the lower end of the tube A and having its lower end provided with a cock, k for the purpose of freeing the tube A from dirt or other foreign matter. I provide the lower water-chamber, A, with a waste-pipe, L, to withdraw the water from the heater when desired.

M represents a steam or blow-oft pipe that passes into the upper water-chamber, A, its end at being turned upward and terminating in a small annular chamber, A, formed at the top of the chamber A, as shown.

From the chamber A a pipe, N, projects outward through the walls of the heater, the inner end of said pipe terminating within the chamber A at a point directly above the end m of the pipe M. (See Figs. 1, 2, 4.)

The operation of filling, discharging, and cleansing the heater is as follows: Water is forced into the lower chamber, .A, through the induction -pipes K, passing up through the tubes A and filling said tubes and the upper chamber, A. The tube A is filled with water from the upper chamber, as will be readily seen, and all dirt or other foreign matter capable of floating will naturally seek the highest point, that point being the annular chamber A, from whence it may be blown out through the medium of the pipes M and N. As will be seen from the drawings, the eductiou-pipe K opens into the heater below the chamber A, in the tube A and, as said tube is provided with water from the upper chamber solely, it therefore follows that only the water having most heat will flow into said eduction-pipe, while, as the mouth of said eduction-pipe is below the surface of the water, all dirt is prevented from passing through the pipe K and into the boiler.

Having thus described my invention, what I claim is-- 1. In afeed-water heater for locomotive and other steam boilers, the water-chambersA A, connected together by tubes A, and provided with interior heating-chambers, and pipes 0, whereby the escaping productsof combustion from the fire-box or furnace, or the exhaust steam from the engine driven thereby, may pass into, through, and about said water-chambers A A and tubesA of the heater, substantially as described.

2. In a feed-water heater for locomotive and other steam boilers, the combination of the waterchambers A A, having passages D D, connected together by tubes A with the pipes O andinclosing jacketB, whereby the products of combustion or exhaust-steam are passed through and about the water contained in said chambers A A and tubes A substantially as described.

3. In afeed-water heater for locomotive and other steam boilers, the combination of the water-chambers A A A, connected together IIO by tubesA ,and provided withinclosing-jacket per chamber, A, into the eduction-pipe K at B, pipes O, and passages D D, with the induca point below said water-chamber, substantion-pipe K, eduction-pipe K, waste-pipes L tially as described.

K and blow-off pipes M and N, substantially In testimony whereof Iaffix my signature in v 5 as described. presence of two witnesses.

4. In a feed-water heater for locomotive and other steam boilers, provided with water- JAMES ARMSTRONG chambers A A, connected by tubes A, the tube Witnesses: A in combination with the eduction-pipe K, GEO. H. GREENMAN, 10 whereby heated water is passed from the up- SAMUEL WILLIAMS. 

